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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
    class MyDom extends React.Component{



    }
    
    ReactDOM.render('',document.getElementById('app'))
    </script>
</body>
</html>